69 Radio help
Le Mans Master
Joined: Jul 1999
Posts: 7,072
Likes: 4
From: Maryland
Re: 69 Radio help (telk)
There is a condensor on the coil which acts as an aid in radio ignition suppression. Is yours in place? The fact that things change when you touch the antennae makes me think you might need to check for a bad ground somewhere in the system.
Race Director
Joined: Apr 1999
Posts: 10,866
Likes: 717
From: Beverly Hills/Pine Ridge Florida
Re: 69 Radio help (Juliet)
Check up under the rear of the car. Look for the large metal "ground plane" which should be mounted under the antenna. Also, look for the antenna ground strap. It should run from the antenna base to a bolt on the frame. Also, check to see if the antenna is fully plugged into the side of the radio. If it still hums, it just might need a pro to rebuild it. Many companies specialize in rebuilding antique auto radios. Hope this helps. Chuck
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Intermediate
Joined: Nov 2002
Posts: 27
Likes: 0
From: Rochester NY
Re: 69 Radio help (Chuck Gongloff)
Try isolating it to whether the noise is internal to the radio or external to it, i.e., move the car and see if flourescent light or motors in the area are causing the noise. Also, remove the right side trim panel and connect a spare antenna mounted to a ground plane (isolated metalic base) to see if it is an antenna problem. Most likely one or more electrolytic capacitors (the biggest ones in there) have deteriated. Electrolytics have a limited life span and are said to deteriate faster if they are not occassionally repolarized by being powered up. Otherwise, most of the other components including transistors should last a life time unless hit by lightning or static electricity. Good luck
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Re: 69 Radio help (Juliet)
There is a condensor on the coil which acts as an aid in radio ignition suppression. Is yours in place?
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With it NOT running that would not matter.
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With it NOT running that would not matter.
Le Mans Master
Joined: Jul 1999
Posts: 7,072
Likes: 4
From: Maryland
Re: 69 Radio help (SanDiegoPaul)
There is a condensor on the coil which acts as an aid in radio ignition suppression. Is yours in place?
-------------
With it NOT running that would not matter.
-------------
With it NOT running that would not matter.